This document discusses different types of rests and rest seats used in removable partial dentures. It defines a rest as a rigid extension that contacts a prepared tooth surface to provide support. A rest seat is the prepared recess in a tooth to receive a rest. Different types of rests are described including occlusal, lingual, incisal, and implant rests. Requirements and considerations for preparing each type of rest and rest seat are provided. The functions of rests in maintaining occlusion and supporting removable partial dentures are also summarized.
5- Basic principles for designing the removable partial denture class i parti...Amal Kaddah
Content:
Basic principles for removable partial dentures’ designs
1.Objectives and functions of removable partial dentures.
2.Factors that affect removable partial dentures’ design.
a. Abutment condition
b. Ridge condition
c. Patients’ needs, Gender and advanced age
d. Forces acting on removable partial dentures.
3. Biomechanical principles of the distal extension partial denture design
4.Damaging effect of removable partial dentures.
5.Problems of support associated with free-end saddles removable partial dentures.
6.How to control these problems (solutions).
a. Reduction of the load.
b. Distribution of the load between abutment teeth and residual ridges.
c. Wide distribution of the load
d. Providing posterior abutment
7.Principles of Class I RPD design
8.Selecting components for designing free extension removable partial dentures
(Basic Principles of a Properly Designed Components)
a. Denture base and Artificial Teeth
b. Proximal plates
c. Rests
d. Direct retainers and Indirect Retainers
e. Major connector and Minor connectors
9.Conclusion
Minimizing and controlling strain on the residual ridge
Minimizing and controlling strain on the abutment teeth
10. Bibliographies
A STEP IN CASTING OF CAST PARTIAL DENTURE, a precious duplication process and proper wax up of refractory cast results in accurate fitting of the framework of the prosthesis.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
5- Basic principles for designing the removable partial denture class i parti...Amal Kaddah
Content:
Basic principles for removable partial dentures’ designs
1.Objectives and functions of removable partial dentures.
2.Factors that affect removable partial dentures’ design.
a. Abutment condition
b. Ridge condition
c. Patients’ needs, Gender and advanced age
d. Forces acting on removable partial dentures.
3. Biomechanical principles of the distal extension partial denture design
4.Damaging effect of removable partial dentures.
5.Problems of support associated with free-end saddles removable partial dentures.
6.How to control these problems (solutions).
a. Reduction of the load.
b. Distribution of the load between abutment teeth and residual ridges.
c. Wide distribution of the load
d. Providing posterior abutment
7.Principles of Class I RPD design
8.Selecting components for designing free extension removable partial dentures
(Basic Principles of a Properly Designed Components)
a. Denture base and Artificial Teeth
b. Proximal plates
c. Rests
d. Direct retainers and Indirect Retainers
e. Major connector and Minor connectors
9.Conclusion
Minimizing and controlling strain on the residual ridge
Minimizing and controlling strain on the abutment teeth
10. Bibliographies
A STEP IN CASTING OF CAST PARTIAL DENTURE, a precious duplication process and proper wax up of refractory cast results in accurate fitting of the framework of the prosthesis.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Posterior tooth preparationscertified fixed orthodontic courses by Indian den...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Bevels and flares are very important components of resin restoration procedure. This presentation focuses on bevels and flares in restorative procedure.
Definition: The ideal tooth extraction is painless removal of the whole tooth or tooth root with minimal trauma to the investing tissues so that the wound heals uneventfully and no post operative prosthetic problem is created.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
2. DEFINITION
REST
Rigid extension of a removable partial denture that contacts
the occlusal, incisal, cingulum, or lingual surface of a tooth or
restoration, the surface of which is commonly prepared to
receive it
REST SEAT
The prepared recess in a tooth or restoration developed to
receive the occlusal, incisal, cingulum, or lingual rest
3. FUNCTIONS
• Provide vertical support
• Maintains components in their planned positions
• Maintains established occlusal relationships by preventing
settling of the denture
• Prevents impingement of soft tissue
• Directs and distributes occlusal loads to abutment teeth
4. FUNCTIONS
• Prevents extrusion of abutment tooth
• Prevents ingress of food
• Provides resistance to lateral displacement
• Contributes to indirect retention
5. FORMS OF REST AND REST
SEATS
• Occlusal Rest
• Cingulum Rest
• Incisal Rest
• Implants as Rest
7. REQUIREMENTS
• Rounded triangular
• As long as it is wide (2.5mm)
• Marginal ridge must be lowered to permit sufficient bulk of
metal for strength and rigidity (approximately 1.5 mm)
• Floor of occlusal rest seat should be apical to marginal ridge
and occlusal surface, and should be spoon shaped (2mm)
• The angle formed by occlusal rest and vertical minor connector
should be less than 90 degrees
9. DOUBLE OCCLUSAL REST
• More than 90 degree angle
• Mesial and distal side
• Lone tilted abutment
• To support ring clasp
10. EXTENDED OCCLUSAL REST
• Kennedy Class II, modification 1 and Class III situations with
mesially tipped molar
11. MODIFIED EXTENDED
OCCLUSAL REST
• Severely tilted abutment
• In the form of an onlay to restore occlusal plane
• 1-2 mm bevel on buccal and lingual occlusal surface to provide
stabilization
• 1-2 mm guiding plane on mesial surface of abutment
13. INTERNAL OCCLUSAL REST
• Tooth supported cast partial denture
• Occlusal support and horizontal stabilization
• Support derived from floor
• Horizontal stabilization derived from near vertical walls
• Outline form is slightly dovetailed
• Elimination of buccal clasp and favorable rest seat location
15. • Advantage of vertical stiffness
• Prevent tissue-ward movement
• Also provide retention
• Low profile connection
• Alter or eliminate fulcrum location for prosthesis movement
16. SUPPORT FOR RESTS
• Made on sound enamel or any restoration material
• If fissures are found on occlusal surface then they should be
removed and restored first
• Best abutment for cast partial denture is protected abutment
• Preparation with burs and polishing points
17. SUPPORT FOR RESTS
• Rest seats in crowns and inlays are somewhat larger and deeper
• Rest seats for tooth-supported dentures may be made slightly
deeper than those that support a distal extension base
• Internal rest seats are created first in wax, either with suitable
burs in a handpiece holder or by waxing around a lubricated
mandrel
20. JUSTIFICATIONS
• Anterior tooth may be the only abutment available for occlusal
support
• Anterior tooth occasionally may be used to support an indirect
retainer or an auxiliary rest
• Root form, root length, inclination of the tooth, and crown to
root ratio must be considered
• Lingual rest is preferable to incisal rest because it is placed
closer to horizontal axis of rotation of abutment
21. REQUIREMENTS
• Rounded V shape at junction of gingival and middle third
• Mesiodistal length 2.5-3 mm, labiolingual width 2 mm and
inciso-apical depth 1.5 mm
• Prepared with inverted cone followed by tapered stones
• Prepared according to path of insertion
22. MODIFICATIONS/
ALTERNATIVES
• Most satisfactory lingual rest from standpoint of support is one
that is placed on prepared rest seat in cast restoration
• Maybe placed on lingual surface of cast veneer crown, a three-
quarter crown, inlay, laminate veneer, composite restoration, or
etched metal restoration
• Conservative restorations in anterior teeth may be better suited
for ball types of rest seats than inverted V types of rest seats
• Sapphire ceramic orthodontic brackets bonded to lingual
surfaces of mandibular canines and shaped as rest seats maybe
used
24. RECOMMENDATIONS
• Placed at the incisal angles of anterior teeth
• Provides definite support with relatively little loss of tooth
structure and little display of metal
• Used predominantly as auxiliary rests or as indirect retainers
• More likely than lingual rest to lead to some orthodontic
movement of tooth because of unfavorable leverage factors
• Prepared in the form of a rounded notch at the incisal angle
with deepest portion of the preparation apical to incisal edge
25. RECOMMENDATIONS
• Notch should be beveled both labially and lingually
• Lingual enamel should be partly shaped to accommodate the
rigid minor connector
• Width should be 2.5 mm and depth should be 1.5 mm
• Incisal rest should be over-contoured slightly to allow for labial
and incisal finishing to the adjoining enamel
26. JUSTIFICATIONS
• They may take advantage of natural incisal faceting
• Tooth morphology does not permit other designs
• Such rests can restore defective or abraded tooth anatomy
• Incisal rests provide stabilization
• Full incisal rests may restore or provide anterior guidance